孙庆运,王光辉,王德成,李岩芳,叶炳南.巨菌草高温快速干燥设备设计与试验[J].农业机械学报,2018,49(9):338-345.
SUN Qingyun,WANG Guanghui,WANG Decheng,LI Yanfang,YE Bingnan.Design and Test of High Temperature Fast Drying Equipment for Hybrid Pennisetum[J].Transactions of the Chinese Society for Agricultural Machinery,2018,49(9):338-345.
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巨菌草高温快速干燥设备设计与试验   [下载全文]
Design and Test of High Temperature Fast Drying Equipment for Hybrid Pennisetum   [Download Pdf][in English]
投稿时间:2018-05-22  
DOI:10.6041/j.issn.1000-1298.2018.09.039
中文关键词:  巨菌草  高温快速干燥  干燥设备  设计  试验
基金项目:现代农业产业技术体系建设专项资金项目(CARS-34)和广东省湛江菌草机械化加工技术研发与应用项目(29017035)
作者单位
孙庆运 中国农业大学 
王光辉 中国农业大学 
王德成 中国农业大学 
李岩芳 中国农业大学 
叶炳南 中国农业大学 
中文摘要:为了解决巨菌草含水率高、不易贮藏,以及自然晾晒中人工劳动强度大、营养损失大的问题,设计了一套大型高秆禾草高温快速干燥设备。基于传热传质理论,进行了关键参数计算与关键部件的设计,通过力学分析与FLUENT流体仿真进行优化,并对控制单元进行了设计。以最终含水率、水活度、色泽度、粗蛋白含量、酸性洗涤纤维含量和中性洗涤纤维含量为评价指标,进行了设备的干燥试验,并与新鲜物料、自然晾晒干燥进行对比分析。结果表明:高温快速干燥后,巨菌草的最终含水率为(16±1.82)%,水活度为0.5648,生产率为2.73t/h;与新鲜物料相比,亮度值L和蓝黄值b均无显著性差异,红绿值a增加了1.43;粗蛋白含量与酸洗中洗纤维含量均无显著性变化,粗蛋白质量分数较新鲜物料下降0.6个百分点。与自然晾晒相比,高温快速干燥后巨菌草的粗蛋白质量分数增加了0.63个百分点,且具有较好的表观质量。试验结果表明,该套设备改善了干燥后巨菌草的表观质量和品质,满足了巨菌草干燥的要求。
SUN Qingyun  WANG Guanghui  WANG Decheng  LI Yanfang  YE Bingnan
China Agricultural University,China Agricultural University,China Agricultural University,China Agricultural University and China Agricultural University
Key Words:hybrid pennisetum  high temperature fast drying  drying equipment  design  experiment
Abstract:A set of high temperature fast drying (HTFD) equipment for hybrid pennisetum was designed to solve the problem that the hybrid pennisetum is difficult to storage due to high moisture content and problem of large artificial labor intensity and large nutrient loss during natural drying. The calculation of key parameters and design of key components were carried out based on the theory of heat and mass transfer. The control unit was designed through mechanical analysis and FLUENT fluid simulation optimization. The drying test of the equipment was conducted and the final moisture content, water activity, color, crude protein and acid washing were used as evaluation indicators. Then the samples were compared with fresh materials and sun cured drying samples. The results showed that the final moisture content of hybrid pennisetum dried by HTFD was (16±1.82)%, the water activity was 0.5648 and the productivity was 2.73t/h. L (brightness/darkness) and b (yellowness/blueness) of hybrid pennisetum dried by high temperature fast drying (HTFD) had no significant difference with fresh material, while a (redness/greenness) was increased by 1.43. The crude protein content and the acid detergent fiber (ADF) content had no significant difference, and the crude protein content was decreased by 0.6 percentage point compared with the fresh material. Compared with the sun cured drying, the crude protein content of hybrid pennisetum dried by HTFD was increased by 0.63 percentage point, and hybrid pennisetum dried by HTFD had a good apparent quality. The results showed that the set of equipment could meet the drying demand of hybrid pennisetum, which can improve drying yield and the quality of hybrid pennisetum.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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